Mesh、MeshFilter、MeshRender
Mesh
Meshes contain vertices and multiple triangle arrays.
For every vertex there can be a normal, two texture coordinates, color and tangent. These are optional though and can be removed at will. All vertex information is stored in separate arrays of the same size, so if your mesh has 10 vertices, you would also have 10-size arrays for normals and other attributes.
MeshRenderer
Renders meshes inserted by the MeshFilter or TextMesh.
MeshFilter
A class to access the Mesh of the mesh filter.
總結：
MeshFilter獲取Mesh數據，提供數據給MeshRender進行渲染